Toward an Open-Access of High-Frequency Lake Modelling and Statistics Data for Scientists and Practitioners
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The 1996 AD Delta Collapse and Large Turbidite in Lake Brienz ⁎ Stéphanie Girardclos A, , Oliver T
Marine Geology 241 (2007) 137–154 www.elsevier.com/locate/margeo The 1996 AD delta collapse and large turbidite in Lake Brienz ⁎ Stéphanie Girardclos a, , Oliver T. Schmidt b, Mike Sturm b, Daniel Ariztegui c, André Pugin c,1, Flavio S. Anselmetti a a Geological Institute-ETH Zurich, Universitätsstr. 16, CH-8092 Zürich, Switzerland b EAWAG, Überlandstrasse 133, CH-8600 Dübendorf, Switzerland c Section of Earth Sciences, Université de Genève, 13 rue des Maraîchers, CH-1205 Geneva, Switzerland Received 13 July 2006; received in revised form 15 March 2007; accepted 22 March 2007 Abstract In spring 1996 AD, the occurrence of a large mass-transport was detected by a series of events, which happened in Lake Brienz, Switzerland: turbidity increase and oxygen depletion in deep waters, release of an old corpse into surface waters and occurrence of a small tsunami-like wave. This mass-transport generated a large turbidite deposit, which is studied here by combining high- resolution seismic and sedimentary cores. This turbidite deposit correlates to a prominent onlapping unit in the seismic record. Attaining a maximum of 90 cm in thickness, it is longitudinally graded and thins out towards the end of the lake basin. Thickness distribution map shows that the turbidite extends over ∼8.5 km2 and has a total volume of 2.72⁎106 m3, which amounts to ∼8.7 yr of the lake's annual sediment input. It consists of normally graded sand to silt-sized sediment containing clasts of hemipelagic sediments, topped by a thin, white, clay-sized layer. The source area, the exact dating and the possible trigger of this turbidite deposit, as well as its flow mechanism and ecological impact are presented along with environmental data (river inflow, wind and lake-level measurements). -
Supporting Information
1 Supporting Information 2 Contents: 3 Table S1 : TOC-MAR and OC gross sedimentation data from four lakes page S-1 4 Table S2 : Fred and TOC MAR values of six selected lakes page S-1 5 Figure S1 : Porewater profiles from Lake Zug page S-2 6 Figure S2 : Seasonal development of O2 concentration page S-3 7 8 9 Table S1: Average fluxes of TOC MAR, TOC gross sedimentation and the corresponding OC burial efficiency based on sediment trap data. TOC MAR at deepest benthic gross OC Burial Monitoring duration, Sampling Lake point sedimentation ref effiency % month-year interval gC m-2 yr-1 gC m-2 yr-1 Lake 43.79 45.62 104.19 4-2013 to 11-2014 2 weeks Baldegg Lake Aegeri 77.45 22.77 29.40 3-2014 to 12-2014 2 weeks Lake Hallwil 41.59 22.51 54.12 1-2014 to 12-2014 monthly Lake Rene Gächter 45.96 28.00 60.92 1-1984 to 12-1992 varying Sempach unpublished 10 11 12 Table S2: Characteristics of three eutrophic, one mesotrophic, and two oligotrophic lakes. Fred data for Rotsee, Türlersee, Lake Sempach, Lake 13 Murten and Pfäffikersee are from Müller et al. (2012) and Fred was calculated for Lake Erie (Adams et al., 1982), Lake Superior (Richardson 14 and Nealson, 1989; Remsen et al., 1989; Klump et al., 1989; Heinen and McManus, 2004; Li et al., 2012), and Lake Baikal (Och et al., 2012). 15 TOC MAR was calculated for all lakes based on literature data: Lake Murten (Müller and Schmid, 2009), Lake Baikal (Och et al., 2012), Lake 16 Sempach (Müller et al., 2012), Rotsee (RO) (Naeher et al., 2012), Pfäffikersee (unpublished data), Türlersee (Matzinger et al., 2008), Lake Erie 17 (Smith and Matisoff, 2008; Matisoff et al., 1977) and Lake Superior (Klump et al., 1989; Li et al., 2012). -
Human Impact on the Transport of Terrigenous and Anthropogenic Elements to Peri-Alpine Lakes (Switzerland) Over the Last Decades
Aquat Sci (2013) 75:413–424 DOI 10.1007/s00027-013-0287-6 Aquatic Sciences RESEARCH ARTICLE Human impact on the transport of terrigenous and anthropogenic elements to peri-alpine lakes (Switzerland) over the last decades Florian Thevenon • Stefanie B. Wirth • Marian Fujak • John Pote´ • Ste´phanie Girardclos Received: 22 August 2012 / Accepted: 6 February 2013 / Published online: 22 February 2013 Ó The Author(s) 2013. This article is published with open access at Springerlink.com Abstract Terrigenous (Sc, Fe, K, Mg, Al, Ti) and suspended sediment load at a regional scale. In fact, the anthropogenic (Pb and Cu) element fluxes were measured extensive river damming that occurred in the upstream in a new sediment core from Lake Biel (Switzerland) and watershed catchment (between ca. 1930 and 1950 and up to in previously well-documented cores from two upstream 2,300 m a.s.l.) and that significantly modified seasonal lakes (Lake Brienz and Lake Thun). These three large peri- suspended sediment loads and riverine water discharge alpine lakes are connected by the Aare River, which is the patterns to downstream lakes noticeably diminished the main tributary to the High Rhine River. Major and trace long-range transport of (fine) terrigenous particles by the element analysis of the sediment cores by inductively Aare River. Concerning the transport of anthropogenic coupled plasma mass spectrometry (ICP-MS) shows that pollutants, the lowest lead enrichment factors (EFs Pb) the site of Lake Brienz receives three times more terrige- were measured in the upstream course of the Aare River at nous elements than the two other studied sites, given by the the site of Lake Brienz, whereas the metal pollution was role of Lake Brienz as the first major sediment sink located highest in downstream Lake Biel, with the maximum val- in the foothills of the Alps. -
Subaquatic Slope Instabilities: the Aftermath of River Correction And
1 1 Subaquatic slope instabilities: The aftermath of river correction and 2 artificial dumps in Lake Biel (Switzerland) 3 4 Nathalie Dubois1,2, Love Råman Vinnå 3,5, Marvin Rabold1, Michael Hilbe4, Flavio S. 5 Anselmetti4, Alfred Wüest3,5, Laetitia Meuriot1, Alice Jeannet6,7, Stéphanie 6 Girardclos6,7 7 8 1 Eawag, Swiss Federal Institute of Aquatic Science and Technology, Department of 9 Surface Waters – Research and Management, Dübendorf, Switzerland 10 2 Department of Earth Sciences, ETHZ, Zürich, Switzerland 11 3 Physics of Aquatic Systems Laboratory, Margaretha Kamprad Chair, École 12 Polytechnique Fédérale de Lausanne, Institute of Environmental Engineering, 13 Lausanne, Switzerland 14 4 Institute of Geological Sciences and Oeschger Centre for Climate Change Research, 15 University of Bern, Bern, Switzerland 16 5 Eawag, Swiss Federal Institute of Aquatic Science and Technology, Department of 17 Surface Waters - Research and Management, Kastanienbaum, Switzerland 18 6 Department of Earth Sciences, University of Geneva, Geneva, Switzerland 19 7 Institute for Environmental Sciences, University of Geneva, Geneva, Switzerland 20 21 Corresponding author: Nathalie Dubois, [email protected] 22 23 Associate Editor – Fabrizio Felletti 24 Short Title – Mass transport events linked to river correction 25 This document is the accepted manuscript version of the following article: Dubois, N., Råman Vinnå, L., Rabold, M., Hilbe, M., Anselmetti, F. S., Wüest, A., … Girardclos, S. (2019). Subaquatic slope instabilities: the aftermath of river correction and artificial dumps in Lake Biel (Switzerland). Sedimentology. https://doi.org/10.1111/sed.12669 2 26 ABSTRACT 27 River engineering projects are developing rapidly across the globe, drastically 28 modifying water courses and sediment transfer. -
8Th Scientific Symposium «Life and Care» Weaning | Breathing
8th Scientifi c Symposium «Life and Care» Weaning | Breathing November 26th / 27th 2015 Swiss Paraplegic Centre Nottwil, Switzerland Sponsors Platinum Gold Silver Sponsors 8th Scientific Symposium «Life and Care» Weaning | Breathing Dear Colleagues, It is a great pleasure to invite you to Nottwil for the 8th Symposium on «Life and Care». The symposium this year is devoted to pivotal topics in respiratory medicine, and expert speakers from different fi elds – pneumology, intensive care and paraplegiology – will elucidate many aspects of respiratory medicine. The Swiss Weaning Centre provides diagnostics and treatment for diffi cult to wean patients. Historically, the program was developed for the weaning of tetraplegic patients dependent on respiratory support. But nowadays we treat patients from all fi elds of medicine who are in need of a prolonged weaning procedure. The combination of intensive care medicine, weaning and paraplegiology will provide a comprehensive and in-depth presentation of respiratory medicine as we will talk about extracorporeal support, weaning methods, diaphragm pacing and other topics. We are looking forward seeing you in Nottwil in November 2015. Regards, PD Dr. med. M. Béchir Michael Baumberger, MD Head of Intensive Care, Head of Spinal Cord and Pain and Operative Medicine Rehabilitation Medicine 3 Thursday 26th November 08.45 – 09.00 Opening statement PD Dr. med. Markus Béchir (SUI) 09.00 – 09.45 Neurally adjusted ventilatory assisst (NAVA), principles and applications PD Dr. med. Lukas Brander (SUI) 09.45 – 10.30 Lung transplantation and ECMO PD Dr. med. Reto Schüpbach (SUI) 10.30 – 10.50 Coffee break 10.50 – 11.35 Extracorporeal CO2 removal to avoid intubation. -
Mr. Zappa's Comments Are Shown
Detailed response to the comments of Massimiliano Zappa Our responses are shown below in blue; Mr. Zappa’s comments are shown as normally black text. Comment: Page 1, line 21: Spell maybe them [the performance indicators] out in the abstract. Reply: We will explicitly mention the performance indicators used in our study. The sentence is now: “The performance of both forecast methods is evaluated in relation to the climatological forecast (ensemble of historical streamflow) and the well-known Ensemble Streamflow Prediction approach (ESP, ensemble based on historical meteorology) using common performance indicators (correlation coefficient, mean absolute error (skill score), mean squared error (skill score), continuous ranked probability (skill) score) as well as an impact-based evaluation quantifying the potential economic gain.” Comment: Page 1, line 23 – 25: Nice list. Finding 1) could be better formulated. Such as:"..... Europe indicate, the accuracy/skill of the meteorological forcing used has larger effect than the quality of initial hydrological conditions for relevant ..." Reply: We will adopt your suggestion and change the sentence to: “1) As former studies for other regions of Central Europe indicate, the accuracy / skill of the meteorological forcing used has larger effect than the quality of initial hydrological conditions for relevant stations along the German waterways.” Comment: Page 2, line 19-20: In some rivers is possible to have 2/3 small vessels instead of a big one causing increasing transport costs, but no reduction of the amount of goods transported? Reply: That’s correct and it is detectable that in case of low flow situations the total number of ships, e.g. -
Change of Phytoplankton Composition and Biodiversity in Lake Sempach Before and During Restoration
Hydrobiologia 469: 33–48, 2002. S.A. Ostroumov, S.C. McCutcheon & C.E.W. Steinberg (eds), Ecological Processes and Ecosystems. 33 © 2002 Kluwer Academic Publishers. Printed in the Netherlands. Change of phytoplankton composition and biodiversity in Lake Sempach before and during restoration Hansrudolf Bürgi1 & Pius Stadelmann2 1Department of Limnology, ETH/EAWAG, CH-8600 Dübendorf, Switzerland E-mail: [email protected] 2Agency of Environment Protection of Canton Lucerne, CH-6002 Lucerne, Switzerland E-mail: [email protected] Key words: lake restoration, biodiversity, evenness, phytoplankton, long-term development Abstract Lake Sempach, located in the central part of Switzerland, has a surface area of 14 km2, a maximum depth of 87 m and a water residence time of 15 years. Restoration measures to correct historic eutrophication, including artificial mixing and oxygenation of the hypolimnion, were implemented in 1984. By means of the combination of external and internal load reductions, total phosphorus concentrations decreased in the period 1984–2000 from 160 to 42 mg P m−3. Starting from 1997, hypolimnion oxygenation with pure oxygen was replaced by aeration with fine air bubbles. The reaction of the plankton has been investigated as part of a long-term monitoring program. Taxa numbers, evenness and biodiversity of phytoplankton increased significantly during the last 15 years, concomitant with a marked decline of phosphorus concentration in the lake. Seasonal development of phytoplankton seems to be strongly influenced by the artificial mixing during winter and spring and by changes of the trophic state. Dominance of nitrogen fixing cyanobacteria (Aphanizomenon sp.), causing a severe fish kill in 1984, has been correlated with lower N/P-ratio in the epilimnion. -
Problems During Drinking Water Treatment of Cyanobacterial-Loaded Surface Waters: Consequences for Human Health
Stefan J. Höger Problems during drinking water treatment of cyanobacterial-loaded surface waters: Consequences for human health CO 2H CH3 O N HN NH O H C OMe 3 H C O 3 O NH HN CH 3 CH CH H H 3 3 N N O O CO 2H O CH3 HN N NH CH N 2 + HNN H O 2 H2N+ CH3 O P O O OH O CH CH O 3 3 H O HO N N N N OH H H O O NH2 S OH HO O NH H H H N N N N N NH H H 2 O O N O O OH O O HN NH H2N O H H O N RN NH2Cl NH ? ClH N N 2 OH OH H O 9 N 10 CH3 8 1 2 3 7 6 5 4 Dissertation an der Universität Konstanz Gefördert durch die Deutsche Bundesstiftung Umwelt (DBU) Problems during drinking water treatment of cyanobacterial-loaded surface waters: Consequences for human health Dissertation Zur Erlangung des akademischen Grades des Doktors der Naturwissenschaften an der Universität Konstanz Fakultät für Biologie Vorgelegt von Stefan J. Höger Tag der mündlichen Prüfung: 16.07.2003 Referent: Prof. Dr. Daniel Dietrich Referent: Dr. Eric von Elert Quod si deficiant vires, audacia certe laus erit: in magnis et voluisse sat est. (Sextus Propertius: Elegiae 2, 10, 5 f.) PUBLICATIONS AND PRESENTATIONS Published articles Hitzfeld BC, Hoeger SJ, Dietrich DR. (2000). Cyanobacterial Toxins: Removal during drinking water treatment, and human risk assessment. Environmental Health Perspectives 108 Suppl 1:113-122. -
Switzerland Vacation
Switzerland Vacation Bruce McKay www.Travel-Pix.ca Switzerland Vacation Contents Contents 2 Introduction 3 Maps 4 Welcome 6 Interlaken 9 Harder Kulm 11 Lauterbrunnen 17 Murren 27 Lake Brienz 36 Schynige Platte 44 Lake Thun 46 Rain Day 50 Zurich 54 Lake Zurich 56 Switzerland Vacation Introduction After I first visited Switzerland and had a great time I often told friends it was a place I'd love to revisit. An opportunity for that arose when I booked on for the European Castles Tours "Three Corners of Europe – Black Forest, Alsace and Switzerland". That tour was designed for air travel to and from Zurich, so there was an easy way to add an extension of my own. The last full day of the tour was at Lucerne, and I was able to plan my extension starting there. I didn't want to repeat everything I'd done before, but I did know there was a magic region where I'd love to spend some more time. The Bernese Oberland in central Switzerland extends south into the Bernese Alps. Its mixture of mountains, lakes, and valleys has made it very popular, not only for sightseeing but also for hiking and active sports, both winter and summer. I visited the most famous sites on an earlier tour. This was a more relaxed visit. I stayed in Interlaken, the regional transportation hub, and made day excursions from there. The photos from my longer tour are in the Switzerland-1 and -2 PDFs, and the ones from the first part of this trip are on the "Three Corners" page. -
Active Faulting in Lake Constance (Austria, Germany, Switzerland) Unraveled by Multi-Vintage Reflection Seismic Data
ORIGINAL RESEARCH published: 11 August 2021 doi: 10.3389/feart.2021.670532 Active Faulting in Lake Constance (Austria, Germany, Switzerland) Unraveled by Multi-Vintage Reflection Seismic Data S.C. Fabbri 1*, C. Affentranger 1, S. Krastel 2, K. Lindhorst 2, M. Wessels 3, Herfried Madritsch 4, R. Allenbach 5, M. Herwegh 1, S. Heuberger 6, U. Wielandt-Schuster 7, H. Pomella 8, T. Schwestermann 8 and F.S. Anselmetti 1 1Institute of Geological Sciences and Oeschger Centre of Climate Change Research, University of Bern, Bern, Switzerland, 2Institute of Geosciences, Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 3Institut für Seenforschung der LUBW, Langenargen, Germany, 4National Cooperative for the Disposal of Radioactive Waste (NAGRA), Wettingen, Switzerland, 5Federal Office of Topography Swisstopo, Wabern, Switzerland, 6Department of Earth Sciences, ETH Zürich, Zürich, Switzerland, 7Landesamt für Geologie, Rohstoffe und Bergbau Baden-Württemberg, Freiburg i. Br., Germany, 8Department of Geology, University of Innsbruck, Innsbruck, Austria Probabilistic seismic hazard assessments are primarily based on instrumentally recorded Edited by: and historically documented earthquakes. For the northern part of the European Alpine Francesco Emanuele Maesano, Istituto Nazionale di Geofisicae Arc, slow crustal deformation results in low earthquake recurrence rates and brings up the Vulcanologia (INGV), Italy necessity to extend our perspective beyond the existing earthquake catalog. The Reviewed by: overdeepened basin of Lake Constance (Austria, Germany, and Switzerland), located Chiara Amadori, within the North-Alpine Molasse Basin, is investigated as an ideal (neo-) tectonic archive. University of Pavia, Italy Alessandro Maria Michetti, The lake is surrounded by major tectonic structures and constrained via the North Alpine University of Insubria, Italy Front in the South, the Jura fold-and-thrust belt in the West, and the Hegau-Lake *Correspondence: Constance Graben System in the North. -
How Reliable Is the <Superscript>210 </Superscript>Pb Dating Method
Journal of Paleolimnotogy 9: t61-t78, 1993. © 1993 K&wer Academic Publishers. Prinwd in Belgium. 161 How reliable is the 21°Pb dating method? Old and new results from Switzerland* H. R. von Gunten ~ & R. N. Moser Laboratorium fiir Radiochemie, UniversMit Bern, CH-3000 Bern 9, Switzerland," 1Paul Scherrer lnstitut, CIt-5232 Viltigen PSL Switzerland Received 27 January 1992; accepted 21 May I993 Key words: 2~°Pb dating, geochronology, sedimentation rates, ~37Cs, Switzerland Abstract We present a historical overview of applications of 21°Pb dating in Switzerland with a special empha- sis on the work performed at the University of Bern. It is demonstrated that the average specific activity of 21°Pb in the lower atmosphere is very constant and does not show seasonal variations. We then concentrate on new results from Lobsigensee, a very small lake, and on published and new data from Lake Zurich. Several 21°pb profiles from these lakes show obvious disturbances and a disagreement of the resulting sedimentation rate when compared to that for the 23 years defined by 137Cs peaks of 1986 (Chernobyl) and 1963 (bomb fallout). A mean sedimentation rate of about 0.14 g cm ' a y- i is found in the oxic and suboxic center part of Lake Zurich. In the oxic locations, the al°Pb flux to the sediments was close to the atmospheric input of about 1/60 Bq cm- 2 y- 1. In other parts of the lake a significant deficit in the inventory of 21°Pb was found in the sediments. This could be due to a chemical redissolution of 2~°Pb together with Mn under reducing conditions. -
Interlaken, a Picturesque Swiss Town, U
Reserve your Swiss Alps trip today! Trip #:2-25308 PROGRAM DATES . e d t l Send to MIT Alumni Travel Program g e S a v June 10-18, 2020 t Land Program with Air dates: d s a 600 Memorial Drive, W98-2nd Floor d i r e o T t a r Cambridge, MA 02139 P I P o . June 11-18, 2020 H Land Program without Air dates: s S A . e Please contact the MIT Alumni Travel Program at 800-992-6749 or AHI Travel at r U P 800-323-7373 with questions regarding this trip or to make a reservation. Dear MIT Alumni and Friends, Full Legal Name (exactly as it appears on passport) LAND PROGRAM Embark on a journey through the majestic Swiss Alps. Tucked into the cultural and ! 1) _______________________________________________________________________ geographic heart of Europe, Switzerland boasts breathtaking mountains, crystalline e SwissINTERLAKAEN lp s Title First Middle Last Full Price Special Savings Special Price* r lakes and crisp Alpine air. Stay for seven nights in Interlaken, a picturesque Swiss town, u $3,545 $250 $3,295 t Email: ___________________________________________ ___________________ and spend your days discovering the treasures of this epic destination. MIT Affiliation Uncover the beauty of the Bernese Oberland during hikes, rail journeys, lake cruises, n *Special Price valid if booked by the date found on the address panel. e 2) _______________________________________________________________________ VAT is an additional $295 per person. and funicular and gondola rides. Visit iconic Swiss locales, including Grindelwald and v Title First Middle Last All prices quoted are in USD, per person, based on double occupancy and the capital city of Bern.